From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by galois.linutronix.de (Postfix) with ESMTPS id 4440B404ED for ; Tue, 14 Jul 2020 07:58:30 +0200 (CEST) Date: Tue, 14 Jul 2020 07:58:27 +0200 From: Greg KH Subject: [MODERATED] Re: [PATCH] Raffle 0 Message-ID: <20200714055827.GA656406@kroah.com> References: <5f0cf7c5.1c69fb81.99805.3f5fSMTPIN_ADDED_BROKEN@mx.google.com> MIME-Version: 1.0 In-Reply-To: <5f0cf7c5.1c69fb81.99805.3f5fSMTPIN_ADDED_BROKEN@mx.google.com> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit To: speck@linutronix.de List-ID: On Mon, Jul 13, 2020 at 05:03:44PM -0700, speck for Pawan Gupta wrote: > From: Pawan Gupta > Subject: [PATCH] powercap: restrict energy meter to root access > > From: Len Brown > > Remove non-privileged user access to power data contained in > /sys/class/powercap/intel_rapl/*/energy_uj > > Non-privileged users currently have read access to power data and can > use this data to form a security attack. Some privileged > drivers/applications need read access to this data but don't expose it > to non-privileged users. > > For example, thermald uses this data to ensure that power management > works correctly. Thus removing non-privileged access is preferred over > completely disabling this power reporting capability with > CONFIG_INTEL_RAPL=n. > > Fixes: 95677a9a3847 ("PowerCap: Fix mode for energy counter") > Signed-off-by: Len Brown > --- > drivers/powercap/powercap_sys.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) Also, any reason you didn't run this through checkpatch.pl first?